Trend Micro Announces Results of Share Buyback

Tokyo, Japan – March 30, 2007 - Trend Micro (TSE: 4704; Nasdaq: TMIC), a leader in network antivirus and Internet content security software and services, today announced the results of its share buyback program pursuant to Article 165(2) of the Corporation Law of Japan. The share buyback program was approved pursuant to a resolution adopted at a meeting of the Board of Directors held on March 20, 2007.

1. Purchase period
From March 22, 2007 to March 30, 2007 (based on trade date)

2. Number of shares purchased819,000 shares

3. Aggregate cost of shares purchased
2,533,155,000 yen

4. Purchase method
Transactions through the Tokyo Stock Exchange

Note: At the meeting of the Board of Directors held on March 20, 2007, the Board adopted a resolution approving the share buyback program as follows:

(1) Class of Capital Stock to be Purchased: Shares of Common Stock
(2) Number of Shares to be Purchased: Up to 1 million shares
(3) Total Purchase Price: Up to 3.2 billion yen
(4) Schedule: From March 22, 2007 to March 30, 2007

Notice Regarding Forward-looking Statements

Certain statements that we make in this release are forward-looking statements. These forward-looking statements are based upon management’s current assumptions and beliefs in light of the information currently available to it, but involve known and unknown risks and uncertainties. Many important factors could cause our actual results to differ materially from those expressed in our forward-looking statements. These factors include:

Difficulties in addressing new virus and other computer security problems

Timing of new product introductions and lack of market acceptance for our new products

Existing products and new product introductions by our competitors and the pricing of those products

Declining prices for products and services

The effect of future acquisitions on our financial condition and results of operations

The effect of adverse economic trends on our principal markets

The effect of foreign exchange fluctuations on our results of operations

An increase in the incidence of product returns

The potential lack of attractive investment targets and

Difficulties in successfully executing our investment strategy

We assume no obligation to update any forward-looking statements. For more details regarding risk factors relating to our future performance, please refer to our filings with the U.S. Securities and Exchange Commission.

About Trend Micro:

Trend Micro Incorporated (TSE: 4704), a global cloud security leader, creates a world safe for exchanging digital information with its Internet content security and threat management solutions for businesses and consumers. A pioneer in server security with over 20 years' experience, we deliver top-ranked client, server and cloud-based security that fits our customers' and partners' needs, stops new threats faster, and protects data in physical, virtualized and cloud environments. Powered by the Trend Micro™ Smart Protection Network™ cloud security infrastructure, our industry-leading cloud-computing security technology, products and services stop threats where they emerge, on the Internet, and are supported by 1,000+ threat intelligence experts around the globe.